Practical astronomy :
Hosmer, George L. 1874-1935
Practical astronomy : a textbook for engineering schools and a manual of field methods / by George L. Hosmer - 3 # ed. corrected - xi, 270 páginas
Astronomía esférica
QB145 / H8 1937
Practical astronomy : a textbook for engineering schools and a manual of field methods / by George L. Hosmer - 3 # ed. corrected - xi, 270 páginas
Astronomía esférica
QB145 / H8 1937